Explicitly define the number of mipmap levels in textures

[libs/gl.git] / source / texture3d.h

diff --git a/source/texture3d.h b/source/texture3d.h
index cf336e52b0227fb859d2125cb686f07d70db46b3..437c852ab92f943ed569de54eb4c61f6b34402bf 100644 (file)
--- a/source/texture3d.h
+++ b/source/texture3d.h
@@ -30,6 +30,7 @@ private:
        unsigned width;
        unsigned height;
        unsigned depth;
+       unsigned levels;
        unsigned allocated;
 
 protected:
@@ -37,9 +38,12 @@ protected:
 public:
        Texture3D();
 
-       /** Defines storage structure for the texture.  Must be called before an
-       image can be uploaded.  Once storage is defined, it can't be changed. */
-       void storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp);
+       /** Defines storage structure for the texture.  If lv is zero, the number
+       of mipmap levels is automatically determined from storage dimensions.
+
+       Must be called before an image can be uploaded.  Once storage is defined,
+       it can't be changed. */
+       void storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv = 0);
 
        /** Allocates storage for the texture.  The contents are initially
        undefined.  If storage has already been allocated, does nothing. */